Motor Generator – Clean, Stable & Cost-Saving Power

Eliminate Voltage Fluctuations. Protect Equipment. Save Millions.

At RA Engineering, we provide advanced Rotating Power Inverter Systems (Motor Generator Sets) designed to deliver clean, stable, and distortion-free electricity. Built on a transformer-less architecture, this system ensures complete isolation from grid fluctuations, making it ideal for industries that demand uninterrupted and high-quality power.

What is a Motor Generator?

A Motor Generator (MG) Set by RA Engineering is a rotating power conditioning system that converts unstable grid electricity into pure, stable, and harmonic-free output. Using a synchronous motor coupled with a generator and flywheel, it isolates your plant from grid distortions, delivering clean 400V ±1% power regardless of input variations between 380V and 440V.

How It Works – Simple & Proven

Dirty grid power enters the synchronous motor, which drives a flywheel and generator at constant speed. The generator then produces clean, regulated electricity with zero harmonics, perfect sine wave, and full short-circuit capacity. No electronic inverters. No capacitors. Just mechanical precision built to last 25+ years.

Key Benefits – Real Savings, Real Protection

No More Shutdowns

Eliminates production halts due to high/low voltage, surges, or brownouts — common in Pakistan’s grid.

Clean, Stable Power – Zero Downtime, 40% Lower Maintenance, Built-in 0.99 PF

RA Engineering’s motor generators deliver harmonic-free electricity (THD < 2%) by removing transients and voltage spikes that damage PLCs, VFDs, CNC machines, and electronics—extending equipment life while eliminating PKR 50K–500K/hour shutdown losses, slashing drive and motor maintenance by 40%, and avoiding capacitor bank failures and PFC penalties. With 300% overload capacity for 10 seconds and integrated reactive compensation for a perfect 0.99 power factor, you get robust, penalty-free performance without external PFC panels.

System Philosophy

The system follows a unique energy conversion cycle: Electrical Energy → Mechanical Energy → Electrical Energy This dual-conversion process filters disturbances, eliminates harmonics, and produces clean, stable power — ensuring reliability even during grid fluctuations or power sags.
Core Features
  • Transformer-less design for high efficiency
  • Non-regulated 3-phase 11kV AC input
  • Regulated 3-phase 11kV AC output
  • Harmonics-free and distortion-free power
  • Reactive power and torque load compensation
  • Grid isolation for sensitive electronic systems
  • Eliminates traditional PFI systems
  • Fast response time (≤10 ms)
Performance Advantages
  • Stabilizes voltage and frequency under varying load conditions
  • Protects sensitive control systems from grid noise
  • Improves overall system power factor and efficiency
  • Reduces power losses and enhances active power output
  • Provides smooth startup and synchronization via VFD panel
  • Enables continuous power supply during maintenance through system bypass
Power Quality Protection
  • The Rotating Power Inverter safeguards your system from:
  • Power sags and surges
  • Voltage brownouts and overvoltage
  • Frequency variation and switching transients
  • Harmonic distortion and line noise
  • Electrical spikes and load disturbances
Integrated Control System
  • The system is equipped with ComAp’s InteliSys BaseBox (IS-NTBB) Power Management Controller, handling:
  • Synchronization and voltage control
  • Automatic power factor correction
  • Real-time system protection

Core System Architecture

RA Engineering’s Motor Generator System is built for reliability and efficiency with precision-engineered components. The Power Panel houses main ACB/VCB breakers sized for system voltage and capacity. A VFD Panel ensures smooth startup and grid synchronization, while the ComAp-based Synchronizer & PFI Controller provides accurate voltage and power factor regulation. The Flywheel Assembly maintains system inertia and stabilizes torque variations. A Cooling & Ventilation System keeps temperatures optimal under heavy loads, and the System Bypass allows uninterrupted power during maintenance or faults. Together, these components deliver seamless and dependable power performance.

Applications – Where Clean Power Matters

  • Textile Mills – Protect spinning, weaving, dyeing automation
  • Pharmaceutical Plants – Ensure GMP-compliant production
  • CNC & Robotics – Prevent machine crashes and tool damage
  • Data Centers & Consulates – Zero-risk power for servers & security
  • Hospitals & Labs – Uninterruptible clean power for critical systems

Why Choose RA Engineering

  • In-House Design & Manufacturing – Full control over quality
  • ComAp + Siemens Integration – Ready for SCADA & remote monitoring
  • On-Site Commissioning – By factory-trained engineers
  • 5-Year Warranty – With optional 10-year service contract
  • Finance Options – Leasing & energy-saving payback plans

Project Showcase – Feroz Hub (3.7 MW Motor Generator Installation)

Experience the performance of RA Engineering’s advanced Motor Generator System in action. Our 3.7 MW installation at Feroz Hub demonstrates superior power stability, synchronization precision, and seamless grid integration. 👉 Check out our YouTube video to see the system in operation and learn more about its design, control, and efficiency.

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